Finding the Fourth Proportional to 2,277.02, 3,139.34 and 1,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277.02 : 3,139.34 = 1,490.78 : x
2. Step 2: Convert to fraction form
   2,277.02/3,139.34 = 1,490.78/x
3. Step 3: Cross multiply
   2,277.02x = 3,139.34 × 1,490.78
4. Step 4: Simplify right side
   2,277.02x = 4,680,065.29
5. Step 5: Solve for x
   x = 4,680,065.29/2,277.02
6. Step 6: Final answer
   x = 2,055.35